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Keywords: drag reduction
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2024, 146(6): 061301.
Paper No: FE-23-1385
Published Online: January 24, 2024
... of the recirculation zone in the near-wake region of the bluff body. Overall, the present study demonstrates the practical effectiveness of using plasma actuators for flow control around FWMSC. e-mail:  [email protected] Figure 10( a ) demonstrates the percentage of drag reduction ( Δ C D...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2023, 145(2): 021207.
Paper No: FE-22-1116
Published Online: November 23, 2022
.... Along with this, drag-reducing riblets hamper the cross-flow near the wall, thus further decreasing the turbulence intensity. Results suggest that turbulent kinetic energy (TKE) has a similar trend to the drag reduction characteristic near the wall. The finding ascertains the potential application...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. November 2021, 143(11): 111302.
Paper No: FE-20-1734
Published Online: July 9, 2021
... the periodic drag and lift forces. 06 12 2020 24 05 2021 09 07 2021 wake characterization vortex shedding drag reduction square body triangular body Flow around bodies of engineering importance is a long-established topic of interest because the flowing fluid can generate...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2015, 137(4): 041201.
Paper No: FE-14-1106
Published Online: April 1, 2015
... (they can be created using material deposition techniques). It has been shown that the best performance is achieved when the grooves are aligned with the flow direction and are symmetric. For each class of grooves, there exists an optimal groove spacing, which results in the largest drag reduction...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2014, 136(10): 101202.
Paper No: FE-13-1035
Published Online: July 24, 2014
... Reduction in Rough Pipes ,” J. Fluid Mech. , 45 ( 02 ), pp. 225 – 246 . 10.1017/S0022112071000028 [18] Virk , P. , 1971 , “ An Elastic Sublayer Model for Drag Reduction by Dilute Solutions of Linear Macromolecules ,” J. Fluid Mech. , 45 ( 03 ), pp. 417 – 440 . 10.1017/S0022112071000120...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. November 2013, 135(11): 111202.
Paper No: FE-12-1483
Published Online: August 19, 2013
... and we had 28.2% drag reduction from that of smooth cylinder. Also, the flow on the smooth cylinder separated at around 82 deg but the flow separation on a grooved cylinder appeared beyond 90 deg, that reducing the drag. bluff body circular cylinder blade groove drag reduction energy saving...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. July 2013, 135(7): 071204.
Paper No: FE-12-1106
Published Online: May 17, 2013
... and then increases monotonically with separation distance. tandem cylinders drag coefficient drag reduction wake interaction laminar wake approximation papermaking The flow around two or a cluster of cylinders with different orientations is of interest to different fields of engineering...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. March 2013, 135(3): 031201.
Paper No: FE-11-1252
Published Online: February 22, 2013
... reduction envelope is customarily employed to investigate drag reduction phenomena, it is defined only for polymeric fluids in both straight and coiled tubing and for surfactant-based (SB) fluids in straight tubing. No such envelope is available for SB fluids in coiled tubing. The present research aims...
Journal Articles
Publisher: ASME
Article Type: Fundamental Issues And Canonical Flows
J. Fluids Eng. September 2012, 134(9): 091203.
Published Online: August 22, 2012
... 08 2012 bluff bodies Cartesian grid method drag reduction flow interference immersed boundary method rounded corner square cylinder vortex shedding The flow around a bluff body such as a square or circular cylinder is one of the most commonly dealt with fluid...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2011, 133(5): 051202.
Published Online: June 2, 2011
... with the modification of the flow field on the cylinder surface. The decreases in the pressure coefficients on the upwind-facing faces and on the leeward-facing faces lead to drag reduction of the controlled cylinder by ∼25% when compared with the uncontrolled cylinder. References 1 Okajima , A. , 1982...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. February 2011, 133(2): 021302.
Published Online: February 17, 2011
...% of the propulsion power. 27 10 2009 18 12 2010 17 02 2011 17 02 2011 cavitation drag reduction fluid oscillations friction ships Cavitation reduces the friction by decreasing the hull wetted surface but a significant resistance penalty usually appears because of flow...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. February 2011, 133(2): 021102.
Published Online: February 4, 2011
..., or serrations that have previously been used to reduce airfoil drag will also be considered. 06 06 2010 19 12 2010 04 02 2011 04 02 2011 aerodynamics aerospace components automotive components blades drag reduction fans Industrial fans are widely used for cooling...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Fluids Eng. August 2010, 132(8): 084504.
Published Online: August 26, 2010
... was applied on the new add-on devices. The results from the optimized design were shown to have a 50.9% reduction in drag coefficient. 29 07 2009 06 04 2010 26 08 2010 26 08 2010 agricultural machinery computational fluid dynamics drag reduction fuel Navier-Stokes equations...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2010, 132(5): 051302.
Published Online: May 13, 2010
... with increasing air flux rate up to an optimum, but the drag rise for greater rates. A synergy of friction reduction under attached ventilated cavity and microbubble drag reduction downstream of it was shown. 31 03 2009 19 03 2010 13 05 2010 13 05 2010 boundary layers bubbles...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. May 2010, 132(5): 051204.
Published Online: May 13, 2010
... channel flow drag reduction flow visualisation shear turbulence surfactants viscosity It is well known that the presence of small amounts of certain additives (such as polymers or surfactants) in water can result in a considerable reduction in the drag in the turbulent flow, which was named...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Fluids Eng. April 2010, 132(4): 041303.
Published Online: April 20, 2010
...Kelly A. Stephani; David B. Goldstein Viscous drag reduction on a submerged surface can be obtained both in the limit of an unbroken gas film coating the solid and in the nanobubble or perhaps microbubble coating regime when an air layer is created with superhydrophobic coatings. We examine...
Journal Articles